DE3046841A1 - CONDITIONING ITEM FOR LAUNDRY - Google Patents

Description

30468AV

-A- description

The present invention relates to a conditioning article for Linen, in particular a conditioning article of uniform construction for dispensing conditioning agent, which is advantageous for repeated use in an automatic washing machine, a clothes dryer or other similar container such as a rotating drum can. In particular, it is an article that has means for its automatic attachment to the metallic Inner surface of such a container is provided, whereby the use of external fasteners is unnecessary.

When washing textile materials such as wool, silk, cotton, It is common to use synthetic fibers, etc., one or more conditioning agents At some point in the process add to them softness, antistatic properties, resilience to give to bacteria and the like or to strengthen these properties and undesired effects such as matting, creasing, knotting, etc. to reduce. Condition cuts 1 for such purposes are known. As a rule, such agents are added to the last rinse of the washing process added. However, this method inherently has certain disadvantages which have given rise to attempts at the addition to enable these funds in a different stage of the procedure than during the washing procedure. The simultaneous presence

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The absence of anionic detergents and cationic material in the washing or rinsing medium often leads to the formation of unsightly, insoluble deposits and subsequent discoloration on the textiles. This tendency severely limits the use of cationic plasticizers. Their addition is therefore necessarily postponed to those stages in the washing process in which the anionic detergents are at least substantially used up Time·. to be able to admit. The above-mentioned disadvantages can be effectively overcome, when performing such treatments in the dryer, fiarüberhinaus there is no need for the Kond i tioniermittel directly au1 winds the textiles and more on them liable to the dilute solutions of the washing and rinsing as the solvent.

An even distribution of the conditioning agent in the dryer to achieve effective contact with the washed textiles in a for the user easy to however, the handling type is not easy to obtain. So the use of liquid plasticizer sprays for direct Application to the textiles or, as a pre-treatment, to the inner walls of the dryer can be costly. In addition, can the risk of staining, discoloration, etc. due to the local application of excess conditioning agent is significant be. The use of conditioning articles, which generally contain a base material or a substrate that can be dimensionally stable or elastic and with the condi-

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tioniermitte1 is coated and / or impregnated, means an improvement. The conditioning is in cases where • strong discoloration can occur, can be removed from the textiles; for example, discoloration that may result the contact of cationic conditioning agents, e.g. B. quaternary ammonium salts, with substances that contain color bodies or Contain heavy metal ions such as iron (II) and iron (III) ions, If at all, they can only be removed by dry cleaning.

The use of dimensionally stable bases in place of elastic bases in order to avoid the problems associated with the structural deformations of the elastic bases also poses problems. While it is not difficult for the consumer to locate the dimensionally stable articles as well as the elastic conditioning articles, they must also be removed after the treatment process is complete. Furthermore, they must have a certain density so that they do not remain on top of the laundry and thus actually only come into contact with part of the textile material to be treated. The prior art relevant to the problems discussed above is contained in U.S. Patents 3,442,6Q2; 3,632,396; 3,633,538; 3,650,816; 3,676,199; 3,686,025; 3,696,034; 3,698,095; 3,826,682; '3,843,395;

3,895,128; 3,944,494; 3,945,936; 3,947,971; 3 956 556 and

4,098,937.

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To overcome the above problems, conditioning articles are available It has been suggested that the mat means were equipped with a temporary attachment of the article on a part of the inside wall of the washing machine! or the dryer should allow. As a rule, such fasteners exist from brackets, hook and loop arrangements, for example from the fasteners available commercially as Velco fasteners, as well as a variety of other mechanical aids. US-PS 3,634,947 describes a conditioning article, which consists of a base material made of thin elastic material such as paper or plastic and which is based on the first side ", i.e. the main surface, with a conditioning agent, which is waxy and preferably .a plasticizer or an antistatic agent, and on the opposite Side is coated with a pressure sensitive adhesive. The latter enables the article to be attached on the inner wall of the dryer in a dimensionally stable connection. Aids of this type largely avoid the problems that occur in articles that are applied by mixing with the textiles. However, the use of adhesive fastening means is associated with the risk that the adhesive strength due to the high humidity and temperature conditions that exist in the dryer or washing machine rule, can be undermined. The adhesive can easily soften and peel off of the article from the wall part in particular under the strong impact conditions under which the contact between the article

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and the fabrics takes place, leads. The article is on mixed in this way with the textiles. The use of hooks and loops has similar disadvantages as their attachment with the wall part is carried out consistently by adhesives. To the extent that the element fixed by glue is kinked, shifted, etc., no dimensionally stable connection of the element with the wall part can be maintained. Such articles are quite inconvenient to work with, as the consumer first has to put a release liner on the Glue protects, has to be removed. In addition, the handling of a "riot" less strong "adhesive" under the washing conditions extremely difficult ~~ see a. Other procedures which involve some structural changes to the dryer that allow the conditioning article to become firmly attached to the device should be connected are not applicable for economic reasons.

The present invention has for its object to be a Condition: onierartikel. for textiles to create in which the above mentioned and similar disadvantages are avoided or at least largely weakened.

Another object of the present invention is to provide one: olehon article that does not have any external aids such as Glue, clips, hooks and loops, or similar fasteners for attaching the named item to the interior

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wall of a rotating drum washing machine, a dryer or a corresponding other container are required.

Furthermore, an article is to be created with the invention, which is cut by the consumer and simply again with conditioning agents can be loaded when the previous load is exhausted, allowing efficient repeated use such article is guaranteed.

Furthermore, it is another object of the present invention to provide an article that can be attached to the inner wall of the dryer, the washing machine or a similar device can be attached by simply attaching it by hand, so as to to achieve a stable connection of mating surfaces through simple contact, 'being the connection essentially insensitive to the effects of temperature, the moisture, the solvent, etc., so conditions that prevail in the devices mentioned is.

Another object of the invention is to provide an arti- kels, with which those normally with conditioning articles that are designed to be blended with the textiles to be treated, associated disadvantages such as the occurrence of peeling or including the article and the like can be turned off.

The object on which the invention is based is achieved by a uniform conditioning article for dispensing conditioning agents in an automatic laundry dryer flow

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■ mel or a similar device with textiles to be treated, which is characterized by a first layer made of a magnetized, rubber-like polymeric material, the is set up in such a way that it inevitably rests magnetically on part of the inner metal surface of the device, maintaining its shape and having a second layer which forms a whole with and overlies the first layer, wherein the first layer is a liquid pervious absorbent Contains foil material for absorbing and releasing the conditioning agent.

In a further aspect, the invention provides an apparatus for conditioning textiles available, which consists of a automatic tumble dryer drum or similar container for textiles and means for rotating the drum and for circulating the textile materials contained therein, wherein The conditioning article described above is magnetically attached to a part of the metallic inner surface of the drum is.

With reference to the accompanying drawings, the invention will be illustrated further explained below.

Figure 1 shows the vertical section of a conditioning article represents an embodiment of the invention; FIG. 2 shows an elevation of a conditioning article according to FIG

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a further embodiment of the invention and FIG. 3 shows a vertical section of a conditioning article according to a third embodiment of the invention.

Figure 1 shows a conditioning article 2 according to the invention, that of a base layer 4 of a magnetized rubber-like Polymers (soft rubber) consists of an adhesive 6 (z. B. a pressure-sensitive melt adhesive) with an absorbent porous cover layer 8 with pores 9, e.g. B. made of polyurethane foam with closed or open interconnected cells. The rubbery one .Polymer layer 4 and the outer layer 8 are along their several (peripheral) interlocking surface parts 10 and 10a connected to each other, whereby a-substantially Central free space 12 as a supply room for the conditioner 14 contains, arises. The storage space or memory 12 is located downwards through the inner side walls 16 and 16a extending peripheral parts 18 and 18a as well as through the Inner surface 20 of the cover layer 8 is limited. The in general The reverse U-shaped shape of the cover layer 8 serves to define the storage space 12 more clearly for receiving the conditioning agent 14; the storage space can optionally be delimited, for example by a substantially flat sheet material, d. H. without the end portions 18 and 18a bonded to the layer 4 as described and in relation to this with a slight ex- size to accommodate the conditional

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niermittel 14 to enable. The embodiment according to FIG 1 is effective with liquid conditioners, but it is also useful for receiving and dispensing solid or semi-solid Conditioning agents that are melted below the temperatures prevailing in the dryer and in this form penetrate through the porous outer layer 8.

According to the invention, the layer 4 consists of a rubber-like one polymeric film material, which by inclusion of magnetic Material, e.g. B. a bar magnet or dispersed magnetized Particle, is magnetized. The magnetized particles can be vertically vertically essentially uniform in layer 4 be or in such a way that they are in the outer parts, i.e. H. in the immediate vicinity of the outer surface 22 of layer 4, are present in a greater concentration. This creates a strong magnetic bond between the Surface 22 and the metallic inner wall of the dryer, if they touch each other, ensures that is sufficient to the Conditioning article 2 during and after the textile treatment, as desired to hold in place. The rubbery polymer The material of the layer 4 preferably consists of a soft rubber belt and is therefore sufficiently elastic or pliable to fit into the relevant part of the surface of the dryer adapt to dimensionally stable connection and lie firmly against it. Such materials are well known and preferably include natural rubber and synthetic polymeric rubber products

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Homopolymers and copolymers of mono- and polyolefins, z. B. ethylene, propylene, butadiene, etc. synthetic rubber products are usually preferred due to their inert character. The selected rubber should ■ naturally face the solvent media be insensitive in the dryer at the temperature there. ' . ·

The material of the outer layer 8 can be elastic or dimensionally stable; in the latter case, the material of the layers should be about the same as that of layer 4 in order to be able to "follow" the shape of layer 4 without the risk of tearing or other structural destruction consists. The selected material £ .olltc versus' the fluidized form of the conditioner 14 permeable and absorbent be. Suitable materials dos dimensionally stable type are z. B. in US-PS 3,634,947 described 'and included, without mandatory limitation, synthetic organic plastics, voi— preferably in the form of a foam to achieve the required porosity to deliver, e.g. B. the above-mentioned polyurethane, polyvinyl chloride, polystyrene, expanded polystyrene with open or closed cells, glass fiber reinforced polyester, etc., synthetic Sponges, cellulose products including cardboard, Cardboard, corrugated cardboard, etc.

Elastic, suitable for the outer absorbent layer 8 Materials are also described in US Pat. No. 3,634,947 and include papers, plastics, rubber, cloth sponges, Fibers, felts and non-woven fibrous non-woven fabrics .. The fiber-based

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Term materials can be natural or synthetic Be origin. Resilient foamed plastics of the polyurethane type are particularly suitable.

The thickness of the magnetized layer 4 and the absorbent Layer 8- can vary within the range of about 0.001 to 10 cm. In general, the thickness is rubbery Layer 4 is within the upper part of the range given above and is usually about 0.1-10 cm. The thickness of the layer 8 depends, for. B. on their absorption capacity and permeability, i.e. in general The lower the thickness, the lower the permeability. Therefore, the thickness of the layer 8 can be very small or, on the contrary, if it is very highly porous, at least the same thickness be like the rubbery layer 4, as illustrated in FIG.

In the embodiment shown in Figure 2, there is Conditioning article 24 made of a magnetized rubber-like base layer 4 and an outer, continuous, net-like layer Sponge layer 26 with pores 28, which is adhesively connected to layer 4 via means 6. This embodiment is suitable for · solid, semi-solid and liquid conditioning agents. The sponge layer 26 can be substantially dimensionally stable .or be flexible, provided that the impact forces which act on it when placed in a dryer

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is sufficient, due to the contact with the circulating textiles, to the conditioning agent of the sponge layer 26 and bring it into contact with the textiles. In this embodiment, the solid or semi-solid Conditioning agents used effectively in the form of particles, it being the layer 26 in molten or liquid form or in the form of a solvent solution, for example Spraying, pouring, dropping, etc. can be added, whereby the layer is substantially impregnated, whereafter the solid or semi-solid form is allowed to dry. F'n melts under the temperature conditions prevailing in the dryer the conditioning agent and is released from the layer 26 in this form. The fixed or semi-fixed Conditioning agents are ground, e.g. By abrasion, and in such form within the pores 28 of the layer 26 be included. The sponge material can be more natural or of synthetic origin, the second type allowing better control of flexibility.

The embodiment illustrated in FIG. 3. e.a conditioning article 30 consists of an absorbent, liquid-permeable continuous layer 32 with an extraordinarily high level of liquid borrowed fine pore size and a rubbery magnetized one Base layer 4.

This embodiment is particularly suitable for liquids Conditioning agents, albeit solid and semi-solid grades

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can also be incorporated, as has been described in connection with FIG. Layer 32 can be made from the materials described above, e.g. B. made of paper, plastic, etc., the essentials Criteria for the selected material Absorbency and permeability for liquid forms of the conditioning agent with which the layer is impregnated. An adhesive 6 is also used to connect the layers.

The thickness of the layers shown in FIGS Embodiments may vary as in connection with Figure 1 was described. The outer absorbent layer in Figures 2 and 3 is in terms of its thickness and Absorbency is usually controlled so that it is after considerable Impregnation contains the conditioning agent in an amount which is approximately equal to that amount for the conditioning treatment of a single laundry load is required. Substantial excess quantities of the conditioning agent are usually not recommended in order to avoid that as a result of the excess amounts of conditioning agent Flecl-en occur. Because the conditioning agent is costly can be, it is also essential that the amount of conditioning agent going into the wastewater is as small as possible to. keep. Relatively thin absorbent layers also ensure that most of the conditioning agent was dispensed during the first part of the drying process, which is normally preferred.

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According to a further embodiment of the invention, which applies in particular to the embodiments of the figures and FIG. 3 is applicable, the outer layers 26 and 32, respectively, may be a magnetized rubber-like layer similar to the layer 4, but with a discontinuous surface that allows the uptake and release of the conditioning agent. By "discontinuous" it is meant that a such layer is perforated in any desired pattern, thereby the conditioning agent contained therein to expose the effects of the washing medium, be it in the

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Washer, dryer or similar device.

The use of an absorbent material for absorbing and releasing the conditioning agent according to the invention is essential. The term "absorbent" or "absorbent" means in this context that the material is capable of these properties, up to about 50 times, preferably about 5 to Absorb and hold 25 times and very particularly preferably about 5 to 15 times the amount of its weight in water to be able to. According to a particularly preferred mode of operation, the absorbent material should be able to at least about three times its weight in water

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take and hold on. The determination of the wicking capacity can be made, for example, in accordance with the method set forth in US Pat. No. 3,843,395. The pore size can be in the range of extremely fine {s. Figure 3) to be relatively large (shown in Figures 1 and 2). In any event, it is necessary that the materials have a relatively high percentage of pore volume, that is, at least about 40 % and preferably from 50 to about 90 % of the total volume of the absorbent layer should be free space. Materials with large pores (FIGS. 1 and 2) are more effective for absorbing solid and semi-solid conditioning agents, especially when they are incorporated into the layer in solid form, e.g. B. by mere "abrasion" of the solid conditioner compared to "attrition" of the conditioner. The particles obtained are entrapped within the pore structure. According to the invention, permeation rather than coating of the absorbent layer is achieved in this way.

In use, the conditioning article is only used by Hand on the metallic inner wall of the dryer, for example the rotating drum, the door, the rib or the Partition wall, etc., attached. Although the item is usually fastened between the partitions, it is often pulled propose applying the conditioning article to the partitions or other raised portions of the interior of the drying drum. Usually this will be done on a leading edge, like this

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thereby an optimal contact is encouraged with the? u conditioning textiles. In any case, it can be determined by tests which are the most effective points for securing the article.

Typically, the conditioning article of the invention will the conditioning agent is already available in the commercially available delivery form contain. If this is not the case, then it can be added to the absorbent layer in the manner described above i_: are, for example, by spraying, pouring, dripping,

^T '"- rubbing, etc. As soon as the dryer is filled with the washed textiles, it is started up and effected by

■ its relative movement creates contact between the conditioner articles and laundry. The combination of heat, moisture and impact contact between the inventive Articles and the laundry causes the conditioning to escape. means by the absorbent layer on the circulated

* Laundry. Although the conditioning treatment is preferably carried out in a tumble dryer, other laundry circulating devices such as washing machines can also be used. In addition, heat and drying air can be omitted for part or all of the process. Usually find about 5 to 50 change of drying gas per minute in the drying drum instead, the gas temperature in the range of about 10 to 90 C, preferably from .50 to 80 ⁰ C.

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The drum rotates at about 20 to 100 revolutions each Minute, preferably at 4 to 80 revolutions per minute. The laundry load is usually average 1.8 to 5.4 kg and takes up 10 to 70% of the available volume of the dryer. Drying takes about 5 minutes to 2 Hours, usually 20 to 60 minutes. Synthetic fabrics such as nylon and polyester usually only take 3 to 10 minutes Min., Whereas continuous use usually takes 10 to 30 minutes.

After use, the conditioning article can be left in place and, if necessary, with a Reload the selected amount of conditioning agent before it is used again in the manner described. Because the magnetically bound conditioning article is firmly hangs on the inner wall, there is little, if any, chance that the article will slip as a result of being reloaded peeled off, even if this is an abrasive contact of the conditioning agent with the absorbent layer of the invention Article requires. Optionally, the article can be pulled by hand using a small amount of tensile force, which in the takes place substantially at right angles to the plane of the major surface of the absorbent layer, can be removed. Normally however, reloading does not require removal of the conditioning article. This can of course be in the desired Placed differently in the washing machine, dryer, etc. depending on the circumstances and the wishes of the user

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will. Optionally, it is also possible to attach a number of such articles according to the invention within the device, thereby different conditioning effects in one single operation to achieve.

Conditioning agents suitable for this purpose are fabric softeners and antistatic agents including nonionic surfactants, e.g. B. higher fatty acid mono ( lower ^ alkanol amides, higher fats au re-di (lower) al kanolamides, Block copolymers of ethylene oxide and propylene oxide with hydrophilic and lipophilic end groups, alkylphenol poly (lower) alkylene oxide (lower) alkanols, preferably with middle alkyl radicals, polymers of lower alkylene glycols, polyalkylene glycol ethers of higher fatty alcohols and polyalkylene glycol esters of higher fatty acids. The anionic agents include the higher fatty acid products with water-soluble bases, higher fatty alcohol sulfates, higher Fatty acid monoglyceride sulfates, sarcosides and taurides as well linear -higher alkaryl sulfonates. Suitable cationic compounds

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fertilizers are higher alkylamines, dialkylamines with lower ones Alkyl groups, dialkylamines with a higher and a lower Alkyl group and quaternary compounds, especially quaternary ammonium salts, e.g. B. quaternary ammonium halides. "Lower" here means alkyl radicals with 1 to 6 carbon atoms and preferably with 2 to 3 carbon atoms. The term "higher" here denotes alkyl radicals with 10 to 20 carbon atoms, preferably with 12 to 18 carbon atoms. Mixtures of non-ionic condi-

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tioning agents with cationic or anionic agents of the Above mentioned types can also be used, usually the proportions of the components of such mixtures be selected so that the end product is in liquid or solid or semi-solid form, as desired, and in satisfactorily through a combination of moisture, Heat and impact contact can be absorbed by the laundry in the automatic dryer.

Specific examples of surfactants of the above types described are in "Synthetic Detergents" by Schwartz, Perry and Berch, 1958, Interscience Publishers, New York, pages 25 to 143. Preferred substances are the following:

Non-ionic: nonylphenoxy-polyethoxyethanol, stearyl mono-

ethanolamide; Stearyl diethanolamide; Block copolymers of ethylene oxide and propylene oxide (Pluronics); Anionic: Sodium soap made from mixed coconut oil and tallow fatty acids; Sodium stearate; Potassium stearate; Sodium laurate; Tallow alcohol sulfates;

Cationic: quaternary dilauryldimethylammonium chloride; hydrogenated tallow alkyl trimethyl ammonium bromide and benzethonium chloride;

Amphoteric: e.g. B. Kokosamidobetaines,
as well as their mixtures.

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The above compilation is for explanation only and lists some of the compounds suitable according to the invention. Conditioning agents of these types are good known, and substances other than those mentioned above can also be used satisfactorily.

Except for the fabric softeners and / or antistatic agents and / or anti-wrinkle and anti-wrinkle agents which are the primary conditioning compounds other components may also be present in these conditioning compositions for their supportive effects. So For example, other conditioning agents can be used that are used for treating textiles in a different way than are intended for softening, e.g. B. Perfumes, brighteners, bactericides, Solvents, thickeners or hardeners, stabilizers and the like Amounts of water are present, especially when the components are in the form of their hydrates. Solvents and dispersants can be used to apply the conditioning compositions to support the absorbent layer. Thereby the different varieties and proportions these aids are selected so that they do not interfere with the functioning of the conditioning agents. '

The invention is explained in more detail below with the aid of examples, without it being restricted to these examples. Parts given are parts by weight, unless expressly stated otherwise.

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example 1

A mixture of (A) 65 parts of a 1: "I mixture of Distearyldimethylammonium chloride and cocoamide propyl betaine and (B) 35 parts of tallow monoethanolamide were mixed together and melted and then made into a rod shape of 20 g poured. The rod was placed centrally on a plastiform rubber magnet sheet attached (leaving an outer edge free). A cotton sheet: Dacron 1: 1 with 117 χ 50 Threads / inch and a basis weight of 5.5 oz / yds. will placed over the rod and the rubber sheet and the cotton / dacron sheet and the rubber sheet is then hot-glued around the edges. If this construction measures 6.35 χ 10.16 cm about the magnetic rubber sheet on the wall of a dryer was attached, the product was found to be suitable for Drying processes and gave satisfactory results dry laundry in these 40 treatments Softness and antistatic quality imparted.

Example 2 >

Example 1 was made using 20 g of the following Composition in stick form repeated:

A) Dimethyl distearylammonium methyl sulfate: cocoamide propyl betaine 80:20,

B) dimethyl distearyl ammonium chloride.

Excellent results similar to those in Example 1 were obtained.

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Example 3

A cellulose sponge measuring 10.16 10.16 χ 1.59 cm has been converted to a 10.16 x 10.16 cm plastiform at its edges. Magnetic rubber sheet attached adhesively. The sponge was then using 30 g of a 6% strength aqueous solution of dimethyldistearylammonium chloride impregnated. The composite was attached to the wall of a dryer and imparted to one in the dryer dry laundry load of 4.1 kg an excellent softening effect. After one pass, there was still a fair amount of plasticizer in the sponge available. The sponge composite could be removed and re-impregnated as desired "7 - what a repeated one Use is necessary. .

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Claims (9)

1. Uniform conditioning article for dispensing conditioning. " agent on laundry in an automatic tumble dryer drum or a similar device with textiles to be treated, characterized by a first Layer made of a magnetized, rubber-like polymer. Material adapted to inevitably adhere to part of the internal metal surface of the device applies magnetically, maintaining its shape, and a second layer that joins the first layer Whole forms and above this, lies, the first being oblique a liquid-permeable absorbent sheet material for absorbing and dispensing the conditioning agent. 2. conditioning article according to claim 1, characterized in that that the first and second layers are continuous . 13 0 0 3 6/0690 ' COPY ORJGINAL INSPECTED 3Q46841 connected along their outer (peripheral) parts are, wherein they include a free space that serves as a memory for receiving conditioning agents. 3. conditioning article according to claim 1 and 2, characterized in that that the second layer is made of a dimensionally stable, ' open or closed cell polyurethane foam consists. 4. conditioning article according to claim 1, characterized in that that the first and second layers are adhesively bonded to one another at their points of contact. 5. conditioning article according to claim 1, characterized in that it is solid, semi-solid with conditioning agents and / or liquid plasticizers, antistatic agents, brighteners, bleaches, bacteriostatic agents and Perfumes is impregnated. 6. conditioning article according to claim 1, characterized in that that the rubber-like polymeric material is a natural one Rubber or a homo- or mixed polymer of mono- and polyunsaturated hydrocarbon monomers with the flexible and dimensionally stable properties of soft rubber. 7. conditioning article according to claim 6, characterized in that that the rubbery polymeric material is a styrene 130036/0690 COPY - 3 is butadiene copolymer. 30A68AT 8. conditioning article according to claim 1, characterized in that the first layer is a dimensionally stable or flexible Material from synthetic sponges, foam shafts , Paper, textile fabric or porous foils organic polymeric materials. 9. conditioning article according to claim 1, characterized in that that the second layer consists of a net-like sponge - holds. 130036/0690 Copy